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Buna-N Industrial O-Ring - Carbon Steel, 6.499" ID, 1.250" OD

Expert Overview

This industrial O-ring, constructed from durable Buna-N and featuring a carbon steel core, provides robust and reliable sealing. Precisely manufactured to stringent tolerances for critical applications.

StandardDIN 933
MaterialCarbon Steel
FinishZinc Plated
GradeN/A
Inside Diameter6.499"
Outside Diameter1.250"
Cross Section0.233"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this Buna-N O-ring is engineered for exceptional performance. Its carbon steel construction offers excellent tensile strength and rigidity, while the Buna-N elastomer provides superior resistance to oils, fuels, and hydraulic fluids. With an inside diameter of 6.499 inches, an outside diameter of 1.250 inches, and a cross-section of 0.233 inches, this seal is ideal for static and dynamic applications in automotive, aerospace, and manufacturing industries where a secure, leak-proof seal is paramount.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

TrelleborgEst. 1905
Sweden🇸🇪
"Engineered polymer solutions."
Market Rank
🏆 #1 Engineered Polymers
Industry Approvals
🚀 Aerospace & Subsea Approved
Warranty & Support
🛡️ High-Performance Guarantee
Green Manufacturing
🌱 Blue Dimension ESG
Certified:ISO 9001, ISO 14001
GarlockEst. 1887
USA🇺🇸
"High-performance fluid sealing."
Market Rank
🏆 Premium Fluid Sealing Leader
Industry Approvals
🚀 Nuclear & Pharma Approved
Warranty & Support
🛡️ Zero-Leak Guarantee
Green Manufacturing
🌱 Sustainable Materials
Certified:ISO 9001, FDA, NSF
FreudenbergEst. 1849
Germany🇩🇪
"Global sealing technologies."
Market Rank
🏆 Top Global Sealing Tech
Industry Approvals
🚀 Audi & Mercedes OEM
Warranty & Support
🛡️ Global Engineering Support
Green Manufacturing
🌱 Climate Neutral 2045
Certified:IATF 16949, ISO 14001

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Ensure the mating groove is clean, dry, and free from burrs or contaminants. 2. Carefully install the O-ring into the groove, avoiding stretching or twisting. 3. Apply a thin layer of compatible lubricant if necessary, ensuring it does not degrade the Buna-N material.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Chemical Composition

Carbon (C)0.28 - 0.55%
Manganese (Mn)0.60 - 0.90%
Phosphorus (P)0.04% max
Sulfur (S)0.05% max

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°C)
Thermal Expansion
Typical for Material Class

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using excessive force or stretching the O-ring during installation.Handle the O-ring with care, allowing it to seat naturally within the groove to prevent damage and ensure a proper seal.
Installing the O-ring into a contaminated or damaged groove.Thoroughly inspect and clean the groove before installation. Address any nicks, burrs, or sharp edges that could compromise the O-ring's integrity.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel lines
  • Oil seals

⚠️ Engineering Warnings

  • Not suitable for use with ozone, strong acids, or polar solvents.
  • Verify chemical compatibility with specific operating fluids before application.

Alternative Products to Consider

Premium Sealing equivalentHigher corrosion resistance (316 SS)
Economy Sealing optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Industrial O-Ring, Buna-N made from?

A: This Industrial O-Ring, Buna-N is manufactured from Carbon Steel.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic cylinders, Fuel lines, Oil seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.499"CS = 0.233"SPECIFICATIONSSize: -214

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.